From: Cheng Xu <chengyou@linux.alibaba.com>
To: jgg@ziepe.ca, leon@kernel.org
Cc: linux-rdma@vger.kernel.org, KaiShen@linux.alibaba.com
Subject: [PATCH for-next] RDMA/erdma: Prevent use-after-free in erdma_accept_newconn()
Date: Thu, 6 Mar 2025 20:04:40 +0800 [thread overview]
Message-ID: <20250306120440.72792-1-chengyou@linux.alibaba.com> (raw)
After the erdma_cep_put(new_cep) being called, new_cep will be freed,
and the following dereference will cause a UAF problem. Fix this issue.
Fixes: 920d93eac8b9 ("RDMA/erdma: Add connection management (CM) support")
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
---
drivers/infiniband/hw/erdma/erdma_cm.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/infiniband/hw/erdma/erdma_cm.c b/drivers/infiniband/hw/erdma/erdma_cm.c
index 1b23c698ec25..e0acc185e719 100644
--- a/drivers/infiniband/hw/erdma/erdma_cm.c
+++ b/drivers/infiniband/hw/erdma/erdma_cm.c
@@ -709,7 +709,6 @@ static void erdma_accept_newconn(struct erdma_cep *cep)
erdma_cancel_mpatimer(new_cep);
erdma_cep_put(new_cep);
- new_cep->sock = NULL;
}
if (new_s) {
--
2.31.1
next reply other threads:[~2025-03-06 12:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-06 12:04 Cheng Xu [this message]
2025-03-06 12:56 ` [PATCH for-next] RDMA/erdma: Prevent use-after-free in erdma_accept_newconn() Markus Elfring
2025-03-06 13:28 ` Leon Romanovsky
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